Messages in this thread | | | From | Arnaldo Carvalho de Melo <> | Date | Fri, 8 Mar 2019 11:39:26 -0300 | Subject | Re: [PATCH] perf probe: Fix getting the kernel map |
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Em Mon, Mar 04, 2019 at 03:13:21PM +0200, Adrian Hunter escreveu: > Since commit 4d99e4136580 ("perf machine: Workaround missing maps for x86 > PTI entry trampolines"), perf tools has been creating more than one kernel > map, however 'perf probe' assumed there could be only one. > > Fix by using machine__kernel_map() to get the main kernel map.
Masami, can I get your Acked-by?
- Arnaldo
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> > Fixes: 4d99e4136580 ("perf machine: Workaround missing maps for x86 PTI entry trampolines") > Fixes: d83212d5dd67 ("kallsyms, x86: Export addresses of PTI entry trampolines") > Tested-by: Joseph Qi <joseph.qi@linux.alibaba.com> > Cc: stable@vger.kernel.org > --- > tools/perf/util/probe-event.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c > index e86f8be89157..6cd96f9b346d 100644 > --- a/tools/perf/util/probe-event.c > +++ b/tools/perf/util/probe-event.c > @@ -157,8 +157,10 @@ static struct map *kernel_get_module_map(const char *module) > if (module && strchr(module, '/')) > return dso__new_map(module); > > - if (!module) > - module = "kernel"; > + if (!module) { > + pos = machine__kernel_map(host_machine); > + return map__get(pos); > + } > > for (pos = maps__first(maps); pos; pos = map__next(pos)) { > /* short_name is "[module]" */ > -- > 2.19.1
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- Arnaldo
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